/* Key guide (/key/): «Your own AI key», step by step with two app screens.
 * Loaded after /styles.css: reuses the landing topbar, footer, colours and
 * font. The guide's look follows the reader page's guide (landing/reader/),
 * without the comic. */
:root{--orange:#ff7a1a}
body.key-page{max-width:1000px;opacity:1}
.key-page .topbar{border-bottom:1px solid var(--line);flex-wrap:nowrap}
.site-logo{color:var(--fg);font-weight:700;font-size:1.05rem;letter-spacing:-0.01em;text-decoration:none}
.site-logo:hover{color:var(--accent)}
.rp-nav-right{display:flex;align-items:center;gap:10px}
.rp-lang{font:inherit;font-size:.85rem;padding:5px 6px;border:1px solid var(--line);border-radius:6px;background:var(--bg);color:var(--fg);max-width:160px}

.guide{padding:28px 0 10px}
.guide h1{font-size:clamp(1.8rem,4vw,2.4rem);letter-spacing:-0.02em;margin:0 0 8px}
.g-kicker{color:var(--accent);font-weight:600;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px}
.g-intro{color:var(--mute);font-size:1.08rem;margin-bottom:8px;max-width:640px}
.mt-note{color:var(--mute);font-size:.9rem;font-style:italic;margin:6px 0 0}
.key-page main>section{border-bottom:0}
.g-sec{display:grid;grid-template-columns:minmax(0,1fr);gap:28px;align-items:start;padding:24px 0!important;border-bottom:1px solid var(--line)!important}
.g-sec:has(.g-shots){grid-template-columns:minmax(0,1fr) auto}
.g-sec:last-child{border-bottom:0!important}
.g-text h2{font-size:1.3rem;margin-bottom:10px;letter-spacing:-0.01em}
.g-text p,.g-text li{font-size:1.02rem;margin-bottom:10px;max-width:640px}
.g-text ul,.g-text ol{padding-inline-start:22px}
.g-text ol li::marker{font-weight:700;color:var(--accent)}
.g-text a{color:var(--accent)}
.g-note{color:var(--mute);font-size:.95rem;border-inline-start:3px solid var(--line);padding-inline-start:12px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:#f3f3f3;border-radius:4px;padding:1px 5px;white-space:nowrap;unicode-bidi:isolate}
.kbtn{display:inline-block;padding:0 7px;border:1.5px solid currentColor;border-radius:6px;font-weight:600;font-size:.92em;line-height:1.45;white-space:nowrap}
.kb-wrap{white-space:nowrap}
.k-cta{margin-top:16px}
.k-cta-btn{display:inline-block;padding:11px 22px;background:var(--fg);color:#fff!important;border-radius:8px;font-weight:600;text-decoration:none}
.k-cta-btn:hover{background:var(--accent)}

/* the screens: a phone-dark frame, the highlight drawn over the picture */
.g-shots{display:flex;flex-direction:column;gap:14px;width:300px}
.g-shot{border:0;padding:4px;margin:0;background:#111418;border-radius:16px;cursor:zoom-in;width:100%;line-height:0;box-shadow:0 4px 14px rgba(0,0,0,.18)}
.shot{position:relative;display:block;container-type:inline-size;direction:ltr}
.g-shot img{width:100%;height:auto;border-radius:12px;display:block}
.hl{position:absolute;border:0;background:none;outline:2px solid var(--orange);outline-offset:2px;box-shadow:0 0 6px 3px rgba(255,122,26,.35);pointer-events:none;animation:hl-pulse 1.6s ease-in-out infinite}
@keyframes hl-pulse{0%,100%{outline-color:rgba(255,122,26,.75);box-shadow:0 0 4px 2px rgba(255,122,26,.25)}50%{outline-color:rgba(255,122,26,1);box-shadow:0 0 9px 4px rgba(255,122,26,.5)}}
@media(prefers-reduced-motion:reduce){.hl{animation:none}}

@media(max-width:760px){
  .g-sec,.g-sec:has(.g-shots){grid-template-columns:minmax(0,1fr);gap:14px}
  .g-shots{width:100%;max-width:420px}
}
@media(max-width:520px){
  body.key-page{padding:0 16px 48px}
  .rp-lang{max-width:none;width:auto;padding:5px 4px}
  .rp-nav-right{gap:8px}
  .key-page .open-app-link{white-space:normal;text-align:center;line-height:1.2;font-size:.85rem;padding:5px 8px}
  .site-logo{font-size:1rem}
}

/* ---------- lightbox (as on /reader/) ---------- */
dialog.zoom{border:0;padding:max(56px,calc(env(safe-area-inset-top) + 48px)) 12px max(16px,env(safe-area-inset-bottom));background:#0d0c0b;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;overflow-y:auto;overscroll-behavior:contain;color:#fff}
dialog.zoom[open]{display:flex;flex-direction:column}
dialog.zoom::backdrop{background:#0d0c0b}
dialog.zoom .shot{margin:auto;flex:none;width:min(100%,560px)}
dialog.zoom img{width:100%;height:auto;border-radius:14px;display:block}
.zoom-close{position:fixed;top:max(10px,calc(env(safe-area-inset-top) + 6px));right:max(10px,calc(env(safe-area-inset-right) + 6px));width:44px;height:44px;border-radius:50%;border:1.5px solid rgba(255,255,255,.55);background:rgba(13,12,11,.75);color:#fff;display:grid;place-items:center;cursor:pointer;z-index:2}
.zoom-close svg{width:20px;height:20px;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;fill:none}
.zoom-close:hover,.zoom-close:focus-visible{background:#fff;color:#0d0c0b}
html.zoom-open,html.zoom-open body{overflow:hidden}